Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 73
move the cursor. Select the OK button to accept the modified
value, or Cancel to undo the modification.
6. Set a suitable Hysteresis value to prevent the alarm from being
triggered unnecessarily by small measurement changes that pass
the alarm limit repeatedly.
7. Set or clear the Alarm enable checkbox to enable or disable the
alarm.
8. Press the Exit button to leave the alarm configuration screen and
return to the basic view.
MI70 Link Program for Data Handling
The real-time window function of the MI70 Link program allows you to
monitor transmitter readings directly with a PC when transmitter is
connected with a serial or USB cable. You can also transfer recorded data
from the main transmitter memory in numeric or graphical format, for
further use in a spreadsheet program (such as Microsoft
Excel) or
virtually any other application.
Follow the steps below to connect your transmitter to the MI70 Link
program using the serial interface:
1. Connect your PC to the transmitter. Refer to section Serial Line
Communication on page 73.
2. Check that the HMT330 is powered.
3. Start the MI70 Link program.
4. Start using the program. There is usually no need to select a COM
port manually, the MI70 Link software can detect it automatically.
The MI70 Link program, and the optional connection cables, are
available from Vaisala. See list of accessories in section Options and
Accessories on page 155.
Serial Line Communication
Connect the serial interface by using either the user port or the service
port.
For permanent interfacing to host system, use the user port. You can
change the serial settings and operate in RUN, STOP and POLL modes.
For temporary connections, use the service port. The service port is
always available with fixed serial settings.
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